| 摘要: |
| 本文分别对纯粘土和一般土的横压试验进行了分析。根据土体开始屈服时的大主应力方向，将屈服划分为两种类型，给出了判别式，推导出每种屈服的比例极限压力。然后，根据屈服后大主应力的转换情况，将屈服后的塑性区划分为两个亚区，推导出每个亚区的应力场。最后，给出了极限压力的计算式，并与试验值作了对比。 |
| 关键词: 粘土，大主应力方向，屈服，应力场，比例极限压力，极限压力 |
| DOI： |
| 分类号:TU432 |
| 基金项目: |
|
| A theoretical analysis of pressuremeter test considering direction changes of largest main stress |
|
Zhang Weixui
|
|
Jilin Chemical Industrial Corporation Design Institute
|
| Abstract: |
| The pressuremeter tests in pure clay and common clay are analysed separately in this paper. The yielding of the tests is classified intO two types according to the direction of the largest main stress when the soil begins to yield. The classification formula of the two yielding types and their limit linear pressures are given. Then the plastic zone is separated into two secondary areas according to the changes of the direction of the latgest main stress, and the stress field in each secondary area are deduced. At last, the calculating formulas of limit pressures are given and compared with the test values. |
| Key words: clay,direction of largest main stress, yielding, stress field, limit linear pressure,limit pressure, |
